Nanostructured Materials and Shaped Solids for Essential Improvement of Energetic Effectiveness and Safety of Nuclear Reactors and Radioactive Wastes

Current Research in Nuclear Reactor Technology in Brazil and Worldwide ◽

10.5772/55205 ◽

2013 ◽

Author(s):

N.V. Klassen ◽

A.E. Ershov ◽

V.V. Kedrov ◽

V.N. Kurlov ◽

S.Z. Shmurak ◽

...

Keyword(s):

Nanostructured Materials ◽

Nuclear Reactors ◽

Radioactive Wastes

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Relevance of the Studies of the OKLO Natural Nuclear Reactors to the Storage of Radioactive Wastes

Radiochimica Acta ◽

10.1524/ract.1978.25.34.241 ◽

1978 ◽

Vol 25 (3-4) ◽

Cited By ~ 7

Author(s):

R. HAGEMANN ◽

E. ROTH

Keyword(s):

Nuclear Reactors ◽

Radioactive Wastes

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Efficient and Compact Mobile Equipment Based on the New RADEON-NWM Technology to Process Liquid Radioactive Wastes Resulted From the Accidents of the Nuclear Installations

Volume 2: Facility Decontamination and Decommissioning; Environmental Remediation; Environmental Management/Public Involvement/Crosscutting Issues/Global Partnering ◽

10.1115/icem2013-96139 ◽

2013 ◽

Author(s):

Gagik Martoyan ◽

Garik Nalbandyan ◽

Lavrenti Gagiyan ◽

Gagik Karamyan ◽

Gagik Brutyan

Keyword(s):

Nuclear Reactors ◽

New Technology ◽

Radioactive Wastes ◽

Heavy Duty ◽

Liquid Radioactive Wastes ◽

Heavy Duty Truck

During the operation of nuclear reactors important volume of liquid and solid radioactive wastes are generated, which, in normal conditions, becomes processed by stationary equipment by different methods to minimize their volume and then sent to specially constructed storages. The cases of accidents of Chernobyl and Fukushima showed that the localization of rejected big quantity of radioactive wastes is a prior problem for their further processing by stationary equipment. In this regard it is very important the processing of radioactive wastes on the contaminated areas to localize them by mobile equipment based on the efficient technologies. RADEON-NWM new technology allows resolving this problem. This technology is compact, completely automated, which makes possible to assemble it on a standard 40-ft by 7-ft trailer driven by heavy-duty truck. The new technology is fully elaborated, the necessary tests are conducted.

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High-resolution electron microscopy of nanostructured materials

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100137239 ◽

1995 ◽

Vol 53 ◽

pp. 172-173

Author(s):

M. José-Yacamán

Keyword(s):

Electron Microscopy ◽

High Resolution ◽

Grain Boundaries ◽

Nanostructured Materials ◽

High Resolution Electron Microscopy ◽

Hrem Image ◽

Small Particles ◽

Resolution Electron ◽

Nanophase Materials

Electron microscopy is a fundamental tool in materials characterization. In the case of nanostructured materials we are looking for features with a size in the nanometer range. Therefore often the conventional TEM techniques are not enough for characterization of nanophases. High Resolution Electron Microscopy (HREM), is a key technique in order to characterize those materials with a resolution of ~ 1.7A. High resolution studies of metallic nanostructured materials has been also reported in the literature. It is concluded that boundaries in nanophase materials are similar in structure to the regular grain boundaries. That work therefore did not confirm the early hipothesis on the field that grain boundaries in nanostructured materials have a special behavior. We will show in this paper that by a combination of HREM image processing, and image calculations, it is possible to prove that small particles and coalesced grains have a significant surface roughness, as well as large internal strain.

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